NFPA 13, Ed. 2016, clause 22.214.171.124.4 requires back-to-back sidewall spray sprinklers to be separated by a continues lintel or soffit. What should be the dimensions, and if any other requirements, of the required lintel or soffit for this purpose?
This article from the National Fire Academy may help explain a standard practice for the back-to-back sprinkler installation for NFPA 13.
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